Far and away, the biggest cost was housing – 33% of all money we spent went towards putting a roof over our heads. Transportation was next, at 17%:

The average consumer unit (defined as “families, single persons living alone or sharing a household with others but who are financially independent, or two or more persons living together who share expenses”) coughed up $16,887 on shelter, while forking over $8,998 on transportation.

Food took third. Broken down, we spent $3,921 eating at home and $2,678 eating out.

Overall, we spent $51,442 last year. That's especially depressing, considering a new report from the US Census Bureau found that the median household income last year was $51,107 -- which is actually below the median household income of $51,681 (in 2012 dollars) generated in 1989.

Here’s a look at what we spent money on 2012, along with percentage of each item towards our total spending and the amount each consumer paid.